All pastes #2053698 Raw Edit

Something

public text v1 · immutable
#2053698 ·published 2011-05-04 04:38 UTC
rendered paste body
> last(Ad(SPY)) / first(Ad(SPY))
Data:
numeric(0)

Index:
NULL
> last(Ad(SPY))
           SPY.Adjusted
2011-05-03       135.73
> first(Ad(SPY))
           SPY.Adjusted
2005-01-03       107.25
> class(Ad(SPY))
[1] "xts" "zoo"